Corrugated steel web welding device for steel-concrete combined box girder

Abstract

The utility model discloses a welding device for corrugated steel webs of a steel-concrete combined box girder, and relates to the technical field of welding auxiliary equipment. Comprising a standing table, the standing table is driven by a lifting driving source to ascend and descend, a transparent shell is fixedly connected to the top end of one side of the standing table, a circle of attaching sidebar is fixedly connected to the outer edge of the side, back to the standing table, of the transparent shell, and a circle of attaching air bag is arranged on the side, back to the transparent shell, of the attaching sidebar. According to the utility model, through the arrangement of the transparent shell attached to the outline of the corrugated steel web, a closed area is enclosed at a to-be-welded part, and through the arrangement of the attached air bag, the transparent shell can be tightly attached to the corrugated steel web, so that the injected carbon dioxide gas is prevented from being dissipated, a better protection effect is achieved, and meanwhile, through the arrangement of the soft closed bucket curtain, the service life of the corrugated steel web is prolonged. And the welding gun can move in the transparent shell, welding work is facilitated, and the welding quality and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding auxiliary equipment, in particular to a welding device for the corrugated steel web of a steel-concrete composite box girder. Background Technique

[0002] The prestressed composite box girder with corrugated steel webs is composed of a concrete top and bottom slab and corrugated steel webs, and the corrugated steel webs connect the concrete top and bottom slabs. When there is less construction experience, the optimized hanging basket method for cantilever construction is currently an option for the safe construction of continuous corrugated steel web beams in China. The existing welding device and welding system for the corrugated steel web of a steel-concrete composite box girder (publication number: CN203270464U) at least expose the following defects in use:

[0003] In actual use, carbon dioxide gas is needed to protect the welding environment during welding work. However, in the above solution, the welding device is directly exposed to the external environment, making it difficult to maintain the carbon dioxide protection environment and affecting the progress of welding work. Therefore, a welding device for the corrugated steel web of a steel-concrete composite box girder is developed. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a welding device for the corrugated steel web of a steel-concrete composite box girder, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A welding device for the corrugated steel web of a steel-concrete composite box girder, including a standing platform, the standing platform is lifted under the drive of a lifting drive source, a transparent outer shell is fixedly connected to the top end of one side of the standing platform, a fitting side rail is fixedly connected to the outer edge of the side of the transparent outer shell facing away from the standing platform, a fitting airbag is arranged on the side of the fitting side rail facing away from the transparent outer shell, a ventilation hole is opened on the surface of the fitting side rail, and the fitting airbag is communicated with a fitting air source through the ventilation hole. A closed hopper curtain is arranged on the side of the transparent outer shell facing the standing platform, and a welding torch is inserted between the inner walls of the side of the closed hopper curtain facing the standing platform.

[0007] Preferably, a positioning pressing ring is rotatably connected to the side of the transparent outer shell facing the standing platform, the side of the positioning pressing ring facing the transparent outer shell is adapted to the closed hopper curtain, and the positioning pressing ring can be connected to the surface of the transparent outer shell. A circumferential outer sleeve ring is fixedly connected to the inner wall of the side of the closed hopper curtain facing the standing platform, and the outer side of the welding torch is fixedly connected between the inner walls of the outer sleeve ring.

[0008] Preferably, a rotating outer sleeve is rotatably connected to the inner wall of the side of the transparent housing facing away from the standing platform. A sliding inner support rod is slidably connected between the inner walls of the rotating outer sleeve. A collar is rotatably connected to the top side of the sliding inner support rod. The inner walls of the collar are sleeved outside the welding torch.

[0009] Preferably, an exhaust port is provided on the top side of the transparent housing. A sealing plug is arranged between the inner walls of the exhaust port. A sliding disk is fixedly connected to the top side of the sealing plug. A plurality of sliding columns are fixedly connected to the top side of the transparent housing, and each sliding column is slidably connected to the outside of the sliding disk. A top cover is fixedly connected to the top sides of all the sliding columns. The top cover and the sliding disk are connected by a spring.

[0010] Preferably, a plurality of fixed side frames are fixedly connected to one side of the transparent housing. A gas cylinder is placed between the inner walls of all the fixed side frames. The inside of the gas cylinder is in communication with the inside of the transparent housing.

[0011] Preferably, a passage ladder plate is fixedly connected to the side of the standing platform facing away from the transparent housing. The lifting driving source is a lift. A plurality of universal wheels are arranged on the bottom side of the lift.

[0012] Compared with the prior art, the utility model has the following beneficial effects: Through the setting of the transparent housing that fits the profile of the corrugated steel web, a closed area is enclosed at the welding position to be welded. Through the setting of the fitting airbag, the transparent housing can be closely attached to the corrugated plate, avoiding the escape of the injected carbon dioxide gas and achieving a good protection effect. At the same time, through the setting of the soft closed curtain, the welding torch can move inside the transparent housing, facilitating the welding work and improving the welding quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is an isometric view of the utility model;

[0014] Figure 2 is a schematic structural diagram of the welding working operation device of the utility model;

[0015] Figure 3 is a schematic structural diagram of the close-fitting sealing device of the utility model;

[0016] Figure 4 is a schematic structural diagram of the welding protection device of the utility model.

[0017] In the figure: 101, transparent housing; 102, fitting side bar; 103, inner sliding support rod; 104, rotating outer sleeve; 105, collar; 106, closed hopper curtain; 107, positioning pressure ring; 108, welding torch; 109, power supply wire; 110, grip; 111, outer collar; 201, fitting airbag; 202, ventilation hole; 203, inflating air pump; 301, top cover; 302, sliding column; 303, spring; 304, sealing plug; 305, sliding disk; 306, air change pump; 307, gas cylinder; 308, fixed side frame; 401, standing platform; 402, passage ladder board; 403, universal wheel; 404, elevator. Detailed implementation manners

[0018] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0022] A welding device for the corrugated steel web of a steel-concrete composite box girder, comprising a standing platform 401 which is lifted and lowered under the drive of a lifting drive source. A transparent outer shell 101 is fixedly connected to the top end of one side of the standing platform 401. A fitting side rail 102 is fixedly connected to the outer edge of the side of the transparent outer shell 101 facing away from the standing platform 401. A fitting airbag 201 is arranged on the side of the fitting side rail 102 facing away from the transparent outer shell 101. A ventilation hole 202 is formed on the surface of the fitting side rail 102, and the fitting airbag 201 is communicated with a fitting air source through the ventilation hole 202. In this embodiment, the fitting air source is an inflation air pump 203. A closed curtain 106 is arranged on the side of the transparent outer shell 101 facing the standing platform 401. A welding torch 108 is inserted between the inner walls of the side of the closed curtain 106 facing the standing platform 401. In this embodiment, a handle 110 is fixedly connected to the outer end of the welding torch 108, and a power supply wire 109 is arranged and electrically connected to a power source. A positioning pressing ring 107 is rotatably connected to the side of the transparent outer shell 101 facing the standing platform 401. The side of the positioning pressing ring 107 facing the transparent outer shell 101 is adapted to the closed curtain 106, and the positioning pressing ring 107 can be connected to the surface of the transparent outer shell 101. A circumferential outer sleeve ring 111 is fixedly connected to the inner walls of the side of the closed curtain 106 facing the standing platform 401, and the outer side of the welding torch 108 is fixedly connected between the inner walls of the outer sleeve ring 111. In this embodiment, the closed curtain 106 is made of bendable cloth, so that the staff can hold the welding torch 108 and move inside the transparent outer shell 101. A rotating outer sleeve tube 104 is rotatably connected to the inner wall of the side of the transparent outer shell 101 facing away from the standing platform 401. An inner sliding support rod 103 is slidably connected between the inner walls of the rotating outer sleeve tube 104. A collar 105 is rotatably connected to the top side of the inner sliding support rod 103, and the outer side of the welding torch 108 is sleeved between the inner walls of the collar 105. It plays a supporting role for the welding torch 108.

[0023] An exhaust port is provided on the top side of the transparent housing 101. A sealing plug 304 is arranged between the inner walls of the exhaust port. A sliding disk 305 is fixedly connected to the top side of the sealing plug 304. Multiple sliding columns 302 are fixedly connected to the top side of the transparent housing 101, and each sliding column 302 is slidably connected to the outside of the sliding disk 305. A top cover 301 is fixedly connected to the top sides of all the sliding columns 302. The top cover 301 and the sliding disk 305 are connected by a spring 303. Multiple groups of fixed side frames 308 are fixedly connected to one side of the transparent housing 101. A gas cylinder 307 is placed between the inner walls of all the fixed side frames 308. The inside of the gas cylinder 307 is in communication with the inside of the transparent housing 101. In this embodiment, the gas cylinder 307 is filled with compressed carbon dioxide gas, and a ventilation pump 306 is arranged between the gas cylinder 307 and the transparent housing 101 to inject carbon dioxide gas into the transparent housing 101. Since the density of carbon dioxide is greater than that of air, it sinks to the lower part of the transparent housing 101, while the air floats up to push the sealing plug 304 to move up and escape into the external environment, thereby creating an internal environment with a higher carbon dioxide concentration in the transparent housing 101, which is convenient for welding.

[0024] A passage ladder plate 402 is fixedly connected to the side of the standing platform 401 facing away from the transparent housing 101. The lifting drive source is a lift 404. Multiple universal wheels 403 are arranged on the bottom side of the lift 404, which is convenient for the staff to adjust the position of the device and get on and off the device.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended embodiments and their equivalents.

Claims

1. A welding device for the corrugated steel web of a steel-concrete composite box girder, comprising a standing platform (401), characterized in that: The standing platform (401) is lifted under the drive of a lifting drive source. One top end of the standing platform (401) is fixedly connected with a transparent outer shell (101). One outer edge of the side of the transparent outer shell (101) facing away from the standing platform (401) is fixedly connected with a fitting side rail (102). One side of the fitting side rail (102) facing away from the transparent outer shell (101) is provided with a fitting airbag (201). A vent hole (202) is formed on the surface of the fitting side rail (102), and the fitting airbag (201) is communicated with a fitting air source through the vent hole (202). One side of the transparent outer shell (101) facing the standing platform (401) is provided with a closed hopper curtain (106). A welding torch (108) is inserted between the inner walls of one side of the closed hopper curtain (106) facing the standing platform (401).

2. The waveform steel web welding device for a steel-concrete composite box girder according to claim 1, characterized in that: One side of the transparent outer shell (101) facing the standing platform (401) is rotatably connected with a positioning pressing ring (107). One side of the positioning pressing ring (107) facing the transparent outer shell (101) is adapted to the closed hopper curtain (106), and the positioning pressing ring (107) can be connected to the surface of the transparent outer shell (101). One side of the closed hopper curtain (106) facing the standing platform (401) is fixedly connected with a sleeve ring (111). The welding torch (108) is fixedly connected between the inner walls of the sleeve ring (111).

3. A welding device for the corrugated steel webs of a steel-concrete composite box girder according to claim 1, characterized in that: One side inner wall of the transparent outer shell (101) facing away from the standing platform (401) is rotatably connected with a rotating outer sleeve tube (104). An inner sliding support rod (103) is slidably connected between the inner walls of the rotating outer sleeve tube (104). One top side of the inner sliding support rod (103) is rotatably connected with a collar (105). The welding torch (108) is sleeved between the inner walls of the collar (105).

4. A welding device for the corrugated steel web of a steel-concrete composite box girder according to claim 1, wherein: An exhaust port is formed on the top side of the transparent outer shell (101). A sealing plug (304) is arranged between the inner walls of the exhaust port. One top side of the sealing plug (304) is fixedly connected with a sliding disk (305). The top side of the transparent outer shell (101) is fixedly connected with a plurality of sliding columns (302), and each sliding column (302) is slidably connected with the outside of the sliding disk (305). One top side of all the sliding columns (302) is fixedly connected with a top cover (301). The top cover (301) and the sliding disk (305) are connected through a spring (303).

5. A welded device for the corrugated steel web of a steel-concrete composite box girder according to claim 1, characterized in that: One side of the transparent outer shell (101) is fixedly connected with a plurality of fixed side frames (308). A gas cylinder (307) is placed between the inner walls of all the fixed side frames (308). The inside of the gas cylinder (307) is communicated with the inside of the transparent outer shell (101).

6. The waveform steel web welding device for a steel-concrete composite box girder according to claim 1, wherein: One side of the standing platform (401) facing away from the transparent outer shell (101) is fixedly connected with a passage ladder plate (402). The lifting drive source is a lift (404). A plurality of universal wheels (403) are arranged on the bottom side of the lift (404).

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